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Ensinger PEI

Sumitomo Bakelite North America 4064 Mineral Filled Electrical Encapsulation Grade Epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy, Encapsulating, Glass or Mineral Filled; Filled/Reinforced Thermoset

Material Notes: Rogers electrical encapsulation grade epoxy is recommended for capacitors, resistors, gold lead encapsulation, relays, coils and bobbins.

Information provided by Sumitomo Bakelite North America, Inc.

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Physical PropertiesMetricEnglishComments
Density 1.79 g/cc0.0647 lb/in³ASTM D792
Water Absorption 0.10 %0.10 %48 hours, 50°C. ASTM D570
Linear Mold Shrinkage 0.0040 - 0.0070 cm/cm0.0040 - 0.0070 in/inCompression Molding. ASTM D955
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 7070
Tensile Strength, Ultimate 41.0 MPa5950 psiASTM D638
Flexural Yield Strength 131 MPa19000 psiASTM D790
Flexural Modulus 19.0 GPa2760 ksiASTM D790
Compressive Yield Strength 262 MPa38000 psiASTM D695
Izod Impact, Notched 0.270 J/cm0.506 ft-lb/inASTM D256A
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 3.53.5Wet; ASTM D150
Dielectric Strength 13.0 kV/mm330 kV/inWet, short term. ASTM D149
Dissipation Factor 0.019
@Frequency 1e+6 Hz
0.019
@Frequency 1e+6 Hz
Wet; ASTM D150
Arc Resistance 180 sec180 secASTM D495
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 20.0 µm/m-°C
@Temperature 20.0 °C
11.1 µin/in-°F
@Temperature 68.0 °F
ASTM D696
 
Processing PropertiesMetricEnglishComments
Mold Temperature 143 - 177 °C289 - 351 °Fcompression/transfer molding.
 174 - 182 °C345 - 360 °Finjection molding.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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